Page 334 - Color Atlas of Biochemistry

Kidney 325

A. Urine

O O
H C
C N
HN C N COO
C O H
C C
O N N Hippurate
H H 0.15 g

Uric acid
0.3-2.0 g NH 2
from purine H C
degradation 3 C
Creatine N NH 2
0.05-0.10 g
2
from muscle H C C O
metabolism
O
O
C
H N NH 2 Creatinine H C NH
2
1.0-1.5 g 3 2
from creatine N C
Urea and creatine
20-35 g phosphate H C N
2
from proteins C
and amino acids
O

24-h urine
Volume: 0.5 - 2 l/day
pH: 5.8 (4.8 - 7.5)
Density: 1.015 - 1.022 kg/l
Osmolarity: 50 -1300 mosmol/kg Glucose Ketone bodies
< 0.16 g < 3 g
Solids: 50 - 72 g/day
Proteins Amino acids
< 0.15 g 1-3 g
C. Inorganic constituents
B. Organic constituents

Cl Daily
120-240 excretion
(mmol)

Na
100 -150

Dissociation
dependent on pH 2
SO
4 K
30-60 60-80
2
HPO NH 4
4
10-40 30-50 2
Ca
4-11
Mg 2
3-6

Koolman, Color Atlas of Biochemistry, 2nd edition © 2005 Thieme
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